Developing-machine.



. No. 893,062. I PATBNTED JULY 14, 1908.

' s. EVANS.

DEVELOPING MACHINE.

-- APPLICATION I'ILE D AUG.5,1907.

Azwlwey the art, that is, the

SAMUEL EVANS, OF CHICAGO, ILLINOIS.

DEV ELOPING-MACHINE Specification of Letters Patent.

Patented July 14., 1908.

' Application filed August 5, 1907. Serial No. 387,146.

To all whom it may concern:

Be it known that I, SAMUEL EVANS, a subj ect of the King of GreatBritain, and a resident of the city of Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Im rovementsin Developing-Machines, of whlch the following, when taken in connectionwith the drawings accompanying and forming a part hereof, is a full andcomplete description sufficient to enable those skilled in the art towhich it pertains to understand, make, and use the same.

This machinerelates to the process of obtaining by means of photography,sand blast resist coatings on glass andother substances. And the objectof the invention is to obtain a machine by the use whereof sheets ofglass which have, on one side thereof been provided with a bi-chromatedcoating of glue or gelatin and exposed to light acting thereon through anegative placed in front thereof, may be developed, as it is termed inarts of such coating which have not been ed by the action of light maybe washed away, thereby leaving upon the glass a protective sand blastcoating corresponding with the negative used.

A further object of the invention is to obtain a developing machine, ofthe character named, by means of which the sheets of glass tobedeveloped may be placed in and taken from the nfachine without wettingthe hands of the operator of such machine.

A further object of the invention is to obtain a machine of the kindnamed which will be easy to operate, not expensive, and not liable toget out of order or repair.

In the drawing referred to Figure 1 'is an elevation of amachineembodying this invention with portions of the side frame broken away toexpose operative parts of the machine to view. Fig. 2 is a verticalsectional view on line 22 of Fig. 1, viewed in the direction indicatedby the arrows. Fig. 3 is a top plan view ofa machine embodying thisinvention. Fig. 4 is a sectional view on line 4-4 of Fig. 1, viewed inthe direction indicated by the arrow. Fig. 5 is a sectional view on line55 of Fig. 1 viewed in the direction indicated by the arrow.

A reference letter applied to designate a given art is used to indicatesuch part ings wherever the same appears.

A, A, is the frame of the machine, and a, a, are 1posts suplportingframe A, A.

B, are s afts rotatably mounted in journal bearings C, C, respectively.

D is an apron comprising a plurality of flexible belts a, d, with crossslats d, (1, secured thereto. The belts d, d, extend around the wheelsE, E. Wheel E is rigidly secured to the shaft B to turn with such shaftand wheel E is rotatably mounted to turn on the shaft B, or, ifpreferred, to turn with such shaft which in turn is rotatably mounted inthe bearing C. To maintain the belt or a ron D taut, the bearing C ismade longitudinally adjustable by mounting it on the screw F, in theordinary way of mounting adjustable bearings.

G is an inclined table underneath apron D for a portion of the length ofsuch apron.

H is a water receptacle. Table G is in position so that cross slats dpassing thereover in the movement of the apron, are so close theretothat water (W) flowing from receptacle H will flow over the slats.

I is a collecting pan or trough, discharging into tank J. Pan I isplaced to receive the flow of water from inclined table G and deliverthe same into tank J.

J is a steam or hot water coil in tank 'J, and is a discharge pipe fromtank J.

K is a pump. Pipe k delivers into the pump K from tank J and by means ofsuch pump the water. flowing into tank J is raised when the pump is inoperation, (through pipe is) and dischar ed into receptacle H.

L is an inclined ta le on which water from receptacle H flows to breakthe fall thereof before it flows onto a sheet of glass (M), which is onthe a ron D and being carried in the direction indicated by the arrow Y.

M is a sheet of glass on apron D.

N-is a water receptacle.

n is a water supply pipe arranged to discharge into receptacle N. Pipe-n1s connected to any suitable source of water supply; I have used waterfrom the city supply pipes.

O is a trough underneath apron D to receive water which has flowed fromtank N.

O is a discharge pipe from trough 0, through which water in such troughmay flow to waste.

P is an air receptacle and p isthe air discharge outlet therefrom, (seeFig. 5). throug out the several figures of the draw- 1 through pipe Q.

. tates the several counter shafts S, S, S

R is a motor used to actuate the pump K by means of belt 1.

R is a motor actuating the blower Q by means of belt 1" and It is amotor used to actuate the belt D. The relative speed of such motor R(where the same is an electric motor) and apron D is such as necessi- I(Fig. 1) with pulleys T, T, t, and T thereon, with the several belts t,t, t, and the intermeshing gears U, U. Gear U is rigidly secured toshaft S and U is rigidly secured to shaft B. The motor R is suppliedwith a driving pulley 1" and one of the belts t extends over suchdriving pulley 1* and over pulley T, another one of the belts 25 extendsover the pulley t and T, and the remaining belt t extends over pulleys tand T. The slow speed of the apron D as compared with the high speed ofthe motor R is thus obtained by me but I do not, of course, limit myselfto this particular way of reducing the speed of the motor to the desiredspeed of the apron.

The operation of this developing machine is ;-A sheet of glass which hasbeen prop erly prepared and exposed to light (with a negative placedbetween it and such light) is placed on the carrier formed by apron D,as sheet M, and is carried by the slowly moving apron towards the otherand upper end of the carrier formed by such apron, and as such sheet ofglass moves over the inclined table G the water flowin down the inclinedtable and over the cross s lats d, (1 flows over such sheet of glass.This water is preferably warmed to about 112 degrees Fahrenheit, and thesheet of glass is subjected thereto until after it has been carriedunder the receptacle I-I, (say from three to five minutes). The sheet ofglass is next carried by such carrier over the trough or collecting pan0 and underneath the receptacle N, receiving in its movement a stream ofwater at say, climatic temperature, from such receptacle N, and afterpassing under such receptacle N the sheet of glass is carried under theair receptacle Pand is partially dried by air directed thereonto fromthe air discharge outlet 19. By the time the sheet of glass has beencarried under the air receptacle P it will have been developed and mustbe taken from the carrier formed by the apron D and placed by theoperator of the machine in a suitable place and position to dry.

A number of sheets of glass are designed to be simultaneously on thecarrier of the machine, in course of developing the movement of theapron D being continuous while the machine is in operation.

By this machine, operating as described I am able to save the labor ofseveral men; to

give the exact time required for the proper washing out or developing ofa sheet of glass; to determine the temperature of the warmed water, toobviate the use of skilled labor in developing the plates, and to doaway with the necessity of wiping the surface of the plates to removeany surplus water thereon; to lessen the breakage of glass while incourse of washing or developing; to lessen the number of spoiled platesfrom over or under washing; and to largely increase the out put ofdeveloped plates suitable for use in the sand blast process which can bemade on a given floor space.

Having thus described. my invention and. its operation what I claim isnew and desire to secure by Letters Patent is,

1. The combination of an apron provided with openings therethrough,rotatable shafts one thereof in a plane higher than the other, wheels onsuch shafts on which wheels the apron is mounted, means to actuate oneof the shafts and to move the apron, an in clined table underneath theapron, such table being of less length than the distance between theshafts, means to supply warmed. water to the apron on the inclinedvtable adjacent to the upper end of such inclined. table, and means tocollect the water discharged from the lower end of the table.

2. The combination of an apron provided with openings therethrough,rotatable shafts mounted on a frame with one of such shafts in a higherplane than the other, wheels on such shafts on which wheels the apron ismounted, means to actuate one of the shafts to move the apron, aninclined table beneath. the apron, such table being of less length, thanthe distance between the shafts, means to supply warmed water to theapron on the inclined table adjacent to the upper end of such inclinedtable, means to collect the water discharged from the lower end of thetable, and means to supply additional water to the apron at a pointhigher than the upper end of the inclined table, means to collect theadditional water after it has flowed. through the apron and means todischarge the same, and means to subsequently direct a flow of air onthe apron.

3. The combination of an apron comprising a flexible belt and connectingslats, a frame, shafts rotatably mounted on the frame, one of suchshafts in a plane higher than the other, wheels on. such shafts on whichwheels the flexible belts of the apron are mounted, means to actuate oneof the shafts to move the apron, an inclined table underneath the apron,such table being of less length than the distance between the shafts,means to supply warmed water to the apron 011 the inclined tableadjacent to the upper end of such inclined table, and means to collectthe water discharged from the lower end of the table.

4. An apron arranged to receive sheets of glass and comprising flexiblebelts and. connecting slats, means to actuate the apron, an

inclined table underneath and adjacent to the apron for a portion of thelength of such apron, a collectlng pan underneath the inclined table andunderneath the apron, a tank underneath the collecting pan, such tankarranged to receive liquid discharged from the collecting an, means towarm the liquid contents of t e tank, a liquid receptacle above theapron, means to transfer liquid from the tank to the receptacle abovethe apron and to discharge such liquid onto the apron and inclinedtable, and means to discharge additional liquid onto the apron withmeans to collect such water and discharge the same to Waste,

5, The combination of an apron provided with openings therethrough,rotatable shafts mounted on a frame with one of such shafts in a higherplane than the other, wheels on such shafts on which wheels the apron ismounted, means to actuate one of the shafts to move the apron, aninclined table beneath the apron, such table being of less length thanthe distance between the shafts, a tank,

a coil in the tank, arranged to contain heat-' ing fluid, a passage waybetween the tanks and a pump interposed in such passage way.

6. The combination of an apron provided with openings therethrough,rotatable shafts mounted on a frame with one of such shafts in a higherplane than the other, wheels on such shafts on which wheels the apron ismounted, means to actuate one of the shafts to move the apron, aninclined table underneath the apron, such table being of less lengththan the distance between the shafts, a tank, a coil in the tank,arranged to contain heating fluid, a tank above the apron adjacent tothe u per end of such inclined table, means to coll ect the waterdischar ed from the lower end of the table and de iver the same in thefirst named tank, a connecting passage way between the tanks and a pumpinterposed in such assage way, and means to supply additiona water tothe apron at a point higher than the up er end of the inclined table,means to col ect the additional water after it has flowed through theapron and means to discharge the same, and means to subsequently directa flow of air on th apron.

7. The combination of an apron compris ing a flexible belt and connectinslats, a frame, shafts rotatably mounted on t eframe, one of such shaftsbeing in a plane higher than the other, wheels on such shafts on whichwheels the flexible belts of the a ron are mounted, means to actuate oneof t e shafts to move the apron, an inclined table underneath the apron,such table being of less length than the distance between the shafts,

a Water receptacle to supply warmed Water to the apron on the inclinedtable adjacent to the u er end of such inclined table, means to co, ectthe water discharged from the lower end of the table, an additionalwater rece tacle above the apron, and means to disc arge air u on theapron.

8. The com ination of an apron comprising a flexible belt and connectinslats, a frame, shafts rotatably mounte on the frame, one of such shaftsbeing in a lane higher than the other wheels on such s afts on whichwheels the flexible belts of the apron are mounted, means to actuate oneof the shafts to move the apron, an inclined table underneath the apron,such table being of less length than the distance between the shafts, awater receptacle to supply water to the apron on the inclined tableadjacent to the up er end of such inclined table, means to 'coll ect thewater discharged from the lower end of the table, means to warm suchwater and means to return it to the water receptacle, an additionalwater receptacle above the apron, means to su ply water to suchadditional water receptac e, and means to discharge air upon the apron.

9. The combination of an apron comprisin'g flexible belts and slats, aframe, rotatable shafts mounted on the frame with one of such shafts ina higher plane than the other, wheels on such shafts on which wheels theflexible belts of the apron are mounted, means to actuate one of theshafts to move the apron, an inclined table underneath the a ron,-suchtable bein of less length than t e distance between 51c shafts, a tank,a coil in'the tank, arranged to contain heating fluid, a waterreceptacle above the a ron adjacent to the up er end of such inc inedtable, means to col ect the water discharged the same in the tank, aconnecting passage tacle and a pump interposed in such passage way, anadditional water receptacle above the apron at a point hi her than theupper end of the inclined table, means to supply Water to the additionalreceptacle and means to collectthe additional water after it has flowedthrough the apron, and means to discharge the same, and means to directa flow of air on the apron and on a sheet of glass on the apron aftersuch sheet of glass has been earned by the apron from under theadditional water receptacle.

SAMUEL EVANS.

In the presence of- CHARLES TURNER BROWN, (301m A. ADAMS.

way between the tank and the water recepfrom the lower end of the tableand deliver

